1
MHT CET 2024 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The magnetic flux near the axis and inside the air core solenoid of length 80 cm carrying current ' I ' is $1.57 \times 10^{-6} \mathrm{~Wb}$. Its magnetic moment will be [cross-sectional area of a solenoid is very small as compared to its length, $\mu_0=4 \pi \times 10^{-7}$ SI unit $](\pi=3.14)$

A
$0.25 \mathrm{~Am}^2$
B
$0.50 \mathrm{~Am}^2$
C
$1 \mathrm{~Am}^2$
D
$1.2 \mathrm{~Am}^2$
2
MHT CET 2024 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Two long straight parallel wires are separated by a distance '2d'. Each wire carries a current 'I' in the same direction. The magnetic field at a point 'P' midway between them is

A
$\frac{2 \mu_0 I}{r}$
B
zero
C
$\frac{\mu_0 I}{4 r}$
D
$\frac{\mu_0 I}{2 r}$
3
MHT CET 2024 10th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The magnitude of magnetic field at point 'O' in the following figure will be

MHT CET 2024 10th May Evening Shift Physics - Moving Charges and Magnetism Question 15 English

A
$\frac{\mu_0}{4 \pi} \frac{\mathrm{I}}{\mathrm{r}}\left(\frac{2}{\pi}+2\right)$
B
$\frac{\mu_0}{4 \pi} \frac{\mathrm{I}}{\mathrm{r}}\left(\frac{2}{\pi}-2\right)$
C
$\frac{\mu_0}{4 \pi} \frac{\mathrm{I}}{\mathrm{r}}\left(2+\frac{\pi}{2}\right)$
D
$\frac{\mu_0}{4 \pi} \frac{\mathrm{I}}{\mathrm{r}}\left(2-\frac{\pi}{2}\right)$
4
MHT CET 2024 10th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A coil of ' $n$ ' turns and radius ' $R$ ' carries a current 'I'. It is unwound and rewound to make a new coil of radius $\frac{R}{3}$ and the same current is passed through it. The ratio of the magnetic moment of the new coil to that of the original coil is

A
3
B
2
C
$\frac{1}{3}$
D
$\frac{1}{2}$
MHT CET Subjects
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12